2008/11/30 by J. Dalseno, I. Adachi, H. Aihara +96
Chemistry · Mathematics · Physics and Astronomy · #Analytical Chemistry (journal) #CP violation #Chemistry #Collider #Dalitz plot #Electron–positron annihilation #Geometry #Hadron #KEKB #Mathematics #Meson #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pi #Quantum Chromodynamics and Particle Interactions #Resonance (particle physics) #hep-ex
paper · pdf · doi:10.1103/physrevd.79.072004
published as Phys.Rev.D79:072004,2009 · 27 pages, 7 figures, Contributed to ICHEP 2008, Submitted to PRD
openalex publication_date 2009/04/16 · arxiv created 2009/04/17 · openalex created_date 2016/06/24 · arxiv updated 2019/08/13 · openalex updated_date 2026/08/05
We present a time-dependent Dalitz plot measurement of CP violation parameters in B0\ensuremath→KS0\ensuremathπ+\ensuremathπ^\ensuremath- decays. These results are obtained from a large data sample that contains 657\ifmmode×\else\texttimes\fi106 BB pairs collected at the \ensuremathΥ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e^\ensuremath- collider. For the CP violation parameters, we obtain two consistent solutions that describe the data well. The first of these solutions may be preferred by external information from other measurements. There is no evidence for direct CP violation in B0\ensuremath→\ensuremathρ0(770)KS0, B0\ensuremath→f0(980)KS0 and B0\ensuremath→K*+(892)\ensuremathπ^\ensuremath-, while measurements of mixing-induced CP violation in B0\ensuremath→\ensuremathρ0(770)KS0 and B0\ensuremath→f0(980)KS0 decays are consistent with that of b\ensuremath→ccs decays. We also measured the phase difference between B0\ensuremath→K*+(892)\ensuremathπ^\ensuremath- and B0\ensuremath→K^*\ensuremath-(892)\ensuremathπ+, which may be used to extract \ensuremathφ3.